The relic cosmological abundance of stable or long-lived, charge neutral, colored particles gets reduced by up to 4 orders of magnitude by annihilations that occur after QCD confinement. We compute the abundance and the cosmological bounds on relic gluinos. The same postconfinement effect strongly enhances coannihilations with a lighter dark matter particle, provided that their mass difference is below a few giga-electron volts. Charged colored particles (such as stops) can instead form baryons, which can be (quasi)stable in some models.
Cosmological abundance of colored relics
GROSS, CHRISTIAN;Strumia, Alessandro
2019-01-01
Abstract
The relic cosmological abundance of stable or long-lived, charge neutral, colored particles gets reduced by up to 4 orders of magnitude by annihilations that occur after QCD confinement. We compute the abundance and the cosmological bounds on relic gluinos. The same postconfinement effect strongly enhances coannihilations with a lighter dark matter particle, provided that their mass difference is below a few giga-electron volts. Charged colored particles (such as stops) can instead form baryons, which can be (quasi)stable in some models.File in questo prodotto:
File | Dimensione | Formato | |
---|---|---|---|
179 ColoredRelics.pdf
accesso aperto
Tipologia:
Versione finale editoriale
Licenza:
Creative commons
Dimensione
1.12 MB
Formato
Adobe PDF
|
1.12 MB | Adobe PDF | Visualizza/Apri |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.